A sack or bag used to hold vital gear and keep it dry in the event of a capsize or water coming into the canoe.

A dry bag is a type of gear bag that seals in a waterproof manner. Dry bags are often used in kayaking, canoeing, rafting, and other outdoor activities where sensitive items would otherwise get wet. Most people use dry bags to carry cell phones, digital cameras, GPS equipment, and maps/documents.